Shade-holder for inverted incandescent gas-burners.



J. KIRSCHBAUM.

SHADE HOLDER FOR INVERTED INCANDESCENT GAS BURNERS.

APPLICATION HLED DEC. 28, 19!?- Patented Dec. 17, 1918.

rrnn sTATns PATEN ormon.

JOHN KIRSGHBAUM, OF WATERBURY, CONNECTICUT, ASSIGNOR TO WATERIBURY MFG.00., OF WATERBURY, CONNECTICUT, A CORPORATION.

SHADE-HOLDER FOR INVERTED INCANDESCENT GAS-BURNERS.

Application filed December 28, 1917.

To all whom it may concern:

Be it known that I, JOHN KmsoirBAUM, a citizen of the United States,residing at lVaterbury, in the county of New Haven, and State ofConnecticut, have invented a new and useful Improvement in Shade-Holders for Inverted Incandescent Gas- Burners; and I do hereby declarethe following, when taken in connection with the accompanying drawingsand the characters of reference marked thereon, to be a full, clear, andexact description of the same, and which said drawings constitute partof this application, and represent, in

Figure 1 a view in side elevation of a shade-holder constructed inaccordance with my invention.

Fig. 2 an enlarged view thereof in transverse section on the line 22 ofFig. 1, looking downward.

Fig. 3 a broken view in vertical central section, showing theshade-holder sleeve applied to the outer end of the goose-neck, and

.the application thereto of the mantle-carrier.

Fig. 4 a detached view on the scale of the preceding figure, showing theshade-holder collar and one of the arms thereof.

Fig. 5 a broken perspective view of the upper end of one of the arms.

My invention relates to an improvement in shade-holders for invertedincandescent gasburners, the object being to produce at a low cost formanufacure, a simple, convenient and reliable fixture of attractive andworkmanlike appearance.

With these ends in view, my invention consists in a shade-holder havingcertain details of construction as will be hereinafter described andpointed out in the claims.

In carrying out my invention as herein shown, I employ a sheet-metalcollar 3 adapted in diameter to be applied to the goose-neck 4 justabove the vertically depending inverted threaded outer end 5 thereof,the said goose-neck forming the gas-supply pipe of the fixture. Thecollar is formed at equidistant points upon its surface with threestruck-up, vertically arranged, flattened flutes 6, which combine withportions of the outer face of the collar to form vertical pocketsradially offstanding therefrom. The lower ends of the pockets are openfor the insertion into them of the upper ends 7 of flexible, fiat,

Specification of Letters Patent.

Patented Dec. 17, 1918.

Serial No. 209,204.

sheet-metal shade-supporting arms 8 having their upper ends formed withperforations .9 into which portions of the fiat outer walls 8 are bentdownward and inward to form gripping-fingers 11, curled out-warlly attheir extreme outer ends as at 12. The inward inclination of thegripping-fingers 11 adapts them, when sprung apart, to receive betweenthem, considered collectively, the outwardly turned lip 13 of a globularshade 14. Under this construction, the greater the weight of the shadeand the more the downward pull thereon, the stronger the gripping actionof the arms 8, since as they are drawn downward, their gripping-fingers11 tend to approach each other as shown in broken lines in Fig. 1. Thereare limits, however, beyond which the arms 8 will not resist downwarddraft upon the shade 14; they will be sprung apart if the shade isgrasped and pulled directly downward with suflicient force to overcomethe spring of the arms and also the friction between the inner faces ofthe. inwardly inclined grippingfingers 11 and the exterior face of theoutwardly turned lip 13 of the shade, but the downward pull of the shadedue to its weight alone is never suflicient to overcome the spring ofthe arms and the friction referred to, with the effect that, inpractice, the greater the weight of the shade the stronger the hold ofthe arms, and to the weight of the shade considerable downward pull maybe added.

The arms 8 are further held in place in the pockets 6 of the collar 3,by having the upper end of the threaded sleeve 15 of the cap 16 of themantle-carrier 17, screwed up against them, as clearly shown in Fig. 3.

I claim In a shade-holder for inverted incandescent gas-burners, thecombination with a goose-neck supply-pipe having its inverted dependingouter end threaded, of a sheet metal collar applied to the said pipejust above the threaded portion thereof and struck up to form aplurality of vertically arranged, flattened flutes combining with Theouter and lower ends of the said arms portions of the outer surface ofthe said pipe to form pockets, the lower ends of Which are open,shade-st1pporting arms having their upper ends flattened for insertioninto the lower open ends of the said pockets in which they'a're securedby inwardly upsetting the metal of the outer faces of the said flutes,and a mantle-carrier the cap of Which is formed with a threaded sleeve10 Which screws upon the threaded end of the said pipe and the edge ofWhich abuts against the inner ends of the said arms.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

JOHN KIRSCHBAUM.

Witnesses A. C. BECKER, J. L. NEAGLE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. 0.

